[infinispan-issues] [JBoss JIRA] (ISPN-3173) Add a query operation over java hotrod client

[Mircea Markus (JIRA)]

     [ https://issues.jboss.org/browse/ISPN-3173?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Mircea Markus updated ISPN-3173:
--------------------------------

    Summary: Add a query operation over java hotrod client   (was: Add a query operation over hotrod )

    
> Add a query operation over java hotrod client 
> ----------------------------------------------
>
>                 Key: ISPN-3173
>                 URL: https://issues.jboss.org/browse/ISPN-3173
>             Project: Infinispan
>          Issue Type: Feature Request
>            Reporter: Mircea Markus
>            Assignee: Mircea Markus
>
> HR request: [op_id] [payload].
> The request payload is query specific (not defined in the HR protocol) and at this stage has the following format: [Q_TYPE] [QUERY_ST] [FIRST_INDEX] [PAGE_SIZE]. This format accommodates the remote query requirements as defined in ISPN-3169.
> - Q_TYPE (protobuf's byte) and query identifier, 1 for JPAQL (this is the query type we'll support). In future we'll add different query types as well.
> - QUERY_STRING (protobuf's string)- JPAQL string generated by the fluent API (ISPN-3169). Parameters are encoded in this string (vs being sent separately)
> - FIRST_INDEX + PAGE_SIZE (protobuf's int)- used for paginating/iterating over the result set.
> HR response: [HR_SUCESS_FLAG] [payload]
> PAYLOAD = [NUM_EL] [PROJ_SIZE] [ELEMENTS]
> - even though at this stage we don't support projections (see ISPN-3169) PROJ_SIZE is added for future compatibility when projection will be supported.
> Note that the payload for both request and response should be marshalled with protobuf as this information is read/written over   

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